The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 10, 2020
Filed:
Nov. 05, 2014
Thyssenkrupp Steel Europe Ag, Duisburg, DE;
Thyssenkrupp Ag, Essen, DE;
Azeddine Chergui, Dortmund, DE;
ThyssenKrupp Steel Europe AG, Duisburg, DE;
ThyssenKrupp AG, Essen, DE;
Abstract
Sandwich panels may include an intermediate thermoplastic layer disposed between two metallic cover layers. Some methods for welding a sandwich panel to a metallic component may involve heating a region of the sandwich panel with a preheating current so that the thermoplastic layer is softened and by compression of the cover layers is displaced from the welding region. A tack-welding current flowing between first and second welding electrodes may weld the cover layers together, and a welding current may be used to weld the metallic cover layers to the metallic component. In some cases, the first welding electrode may be in contact with one of the metallic cover layers, and the second welding electrode may be in contact with the metallic component. As a result, the sandwich panel may be joined to the metallic component in a short cycle time without blisters and faults arising in the sandwich component.